360 Solid Cam Question....
Don't worry about any oiling issues. If the current pushrods are sealed on the ends it won't matter. If you haven't had any issues with the hyd cam, you'll have the same oil levels to the rockers with the solid set up.
Get the right length pushrods and you should be good to go.
Econo W2's don't flow all that well in unported form. The cam will help, having a good port job put on the w2's would be a bonus.